ntgdibad.h File Reference

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Classes
struct	tagFONTFAMILYINFO

Typedefs
typedef struct tagFONTFAMILYINFO	FONTFAMILYINFO
typedef struct tagFONTFAMILYINFO *	PFONTFAMILYINFO

Functions
LONG NTAPI	NtGdiGetFontFamilyInfo (HDC Dc, const LOGFONTW *LogFont, PFONTFAMILYINFO Info, LPLONG UnsafeInfoCount)
BOOL APIENTRY	NtGdiGetViewportExtEx (HDC hDC, LPSIZE viewportExt)
BOOL APIENTRY	NtGdiGetViewportOrgEx (HDC hDC, LPPOINT viewportOrg)
BOOL APIENTRY	NtGdiGetWindowExtEx (HDC hDC, LPSIZE windowExt)
BOOL APIENTRY	NtGdiGetWindowOrgEx (HDC hDC, LPPOINT windowOrg)
BOOL APIENTRY	NtGdiOffsetViewportOrgEx (HDC hDC, int XOffset, int YOffset, LPPOINT Point)
BOOL APIENTRY	NtGdiOffsetWindowOrgEx (HDC hDC, int XOffset, int YOffset, LPPOINT Point)
BOOL APIENTRY	NtGdiSetViewportOrgEx (HDC hDC, int X, int Y, LPPOINT Point)
BOOL APIENTRY	NtGdiSetWindowOrgEx (HDC hDC, int X, int Y, LPPOINT Point)

Typedef Documentation

FONTFAMILYINFO

typedef struct tagFONTFAMILYINFO FONTFAMILYINFO

PFONTFAMILYINFO

typedef struct tagFONTFAMILYINFO * PFONTFAMILYINFO

Function Documentation

NtGdiGetFontFamilyInfo()

LONG NTAPI NtGdiGetFontFamilyInfo	(	HDC	Dc,
		const LOGFONTW *	LogFont,
		PFONTFAMILYINFO	Info,
		LPLONG	UnsafeInfoCount
	)

Definition at line 5840 of file freetype.c.

{
    NTSTATUS Status;
    LOGFONTW LogFont;
    PFONTFAMILYINFO Info;
    LONG GotCount, AvailCount, SafeInfoCount;
    ULONG DataSize;

    if (UnsafeLogFont == NULL || UnsafeInfo == NULL || UnsafeInfoCount == NULL)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }

    Status = MmCopyFromCaller(&SafeInfoCount, UnsafeInfoCount, sizeof(SafeInfoCount));
    if (!NT_SUCCESS(Status))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }
    GotCount = 0;
    Status = MmCopyToCaller(UnsafeInfoCount, &GotCount, sizeof(*UnsafeInfoCount));
    if (!NT_SUCCESS(Status))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }
    Status = MmCopyFromCaller(&LogFont, UnsafeLogFont, sizeof(LOGFONTW));
    if (!NT_SUCCESS(Status))
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }
    if (SafeInfoCount <= 0)
    {
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }

    /* Allocate space for a safe copy */
    Status = RtlULongMult(SafeInfoCount, sizeof(FONTFAMILYINFO), &DataSize);
    if (!NT_SUCCESS(Status) || DataSize > LONG_MAX)
    {
        DPRINT1("Overflowed.\n");
        EngSetLastError(ERROR_INVALID_PARAMETER);
        return -1;
    }
    Info = ExAllocatePoolWithTag(PagedPool, DataSize, GDITAG_TEXT);
    if (Info == NULL)
    {
        EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
        return -1;
    }

    /* Retrieve the information */
    AvailCount = IntGetFontFamilyInfo(Dc, &LogFont, Info, SafeInfoCount);
    GotCount = min(AvailCount, SafeInfoCount);
    SafeInfoCount = AvailCount;

    /* Return data to caller */
    if (GotCount > 0)
    {
        Status = RtlULongMult(GotCount, sizeof(FONTFAMILYINFO), &DataSize);
        if (!NT_SUCCESS(Status) || DataSize > LONG_MAX)
        {
            DPRINT1("Overflowed.\n");
            ExFreePoolWithTag(Info, GDITAG_TEXT);
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return -1;
        }
        Status = MmCopyToCaller(UnsafeInfo, Info, DataSize);
        if (!NT_SUCCESS(Status))
        {
            ExFreePoolWithTag(Info, GDITAG_TEXT);
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return -1;
        }
        Status = MmCopyToCaller(UnsafeInfoCount, &SafeInfoCount, sizeof(*UnsafeInfoCount));
        if (!NT_SUCCESS(Status))
        {
            ExFreePoolWithTag(Info, GDITAG_TEXT);
            EngSetLastError(ERROR_INVALID_PARAMETER);
            return -1;
        }
    }

    ExFreePoolWithTag(Info, GDITAG_TEXT);

    return GotCount;
}

Referenced by IntEnumFontFamilies().

NtGdiGetViewportExtEx()

BOOL APIENTRY NtGdiGetViewportExtEx	(	HDC	hDC,
		LPSIZE	viewportExt
	)

NtGdiGetViewportOrgEx()

BOOL APIENTRY NtGdiGetViewportOrgEx	(	HDC	hDC,
		LPPOINT	viewportOrg
	)

NtGdiGetWindowExtEx()

BOOL APIENTRY NtGdiGetWindowExtEx	(	HDC	hDC,
		LPSIZE	windowExt
	)

NtGdiGetWindowOrgEx()

BOOL APIENTRY NtGdiGetWindowOrgEx	(	HDC	hDC,
		LPPOINT	windowOrg
	)

NtGdiOffsetViewportOrgEx()

BOOL APIENTRY NtGdiOffsetViewportOrgEx	(	HDC	hDC,
		int	XOffset,
		int	YOffset,
		LPPOINT	Point
	)

Definition at line 553 of file coord.c.

{
    PDC      dc;
    PDC_ATTR pdcattr;
    NTSTATUS Status = STATUS_SUCCESS;

    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
    pdcattr = dc->pdcattr;

    if (UnsafePoint)
    {
        _SEH2_TRY
        {
            ProbeForWrite(UnsafePoint, sizeof(POINT), 1);
            UnsafePoint->x = pdcattr->ptlViewportOrg.x;
            UnsafePoint->y = pdcattr->ptlViewportOrg.y;
            if (pdcattr->dwLayout & LAYOUT_RTL)
            {
                UnsafePoint->x = -UnsafePoint->x;
            }
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;

        if (!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            DC_UnlockDc(dc);
            return FALSE;
        }
    }

    if (pdcattr->dwLayout & LAYOUT_RTL)
    {
        XOffset = -XOffset;
    }
    pdcattr->ptlViewportOrg.x += XOffset;
    pdcattr->ptlViewportOrg.y += YOffset;
    pdcattr->flXform |= PAGE_XLATE_CHANGED | WORLD_XFORM_CHANGED | DEVICE_TO_WORLD_INVALID;

    DC_UnlockDc(dc);

    return TRUE;
}

NtGdiOffsetWindowOrgEx()

BOOL APIENTRY NtGdiOffsetWindowOrgEx	(	HDC	hDC,
		int	XOffset,
		int	YOffset,
		LPPOINT	Point
	)

Definition at line 612 of file coord.c.

{
    PDC dc;
    PDC_ATTR pdcattr;

    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
    pdcattr = dc->pdcattr;

    if (Point)
    {
        NTSTATUS Status = STATUS_SUCCESS;

        _SEH2_TRY
        {
            ProbeForWrite(Point, sizeof(POINT), 1);
            Point->x = pdcattr->ptlWindowOrg.x;
            Point->y = pdcattr->ptlWindowOrg.y;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;

        if (!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            DC_UnlockDc(dc);
            return FALSE;
        }
    }

    pdcattr->ptlWindowOrg.x += XOffset;
    pdcattr->ptlWindowOrg.y += YOffset;
    pdcattr->flXform |= PAGE_XLATE_CHANGED | WORLD_XFORM_CHANGED | DEVICE_TO_WORLD_INVALID;

    DC_UnlockDc(dc);

    return TRUE;
}

NtGdiSetViewportOrgEx()

BOOL APIENTRY NtGdiSetViewportOrgEx	(	HDC	hDC,
		int	X,
		int	Y,
		LPPOINT	Point
	)

Definition at line 945 of file coord.c.

{
    PDC dc;
    PDC_ATTR pdcattr;

    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
    pdcattr = dc->pdcattr;

    if (Point)
    {
        NTSTATUS Status = STATUS_SUCCESS;

        _SEH2_TRY
        {
            ProbeForWrite(Point, sizeof(POINT), 1);
            Point->x = pdcattr->ptlViewportOrg.x;
            Point->y = pdcattr->ptlViewportOrg.y;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;

        if (!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            DC_UnlockDc(dc);
            return FALSE;
        }
    }

    pdcattr->ptlViewportOrg.x = X;
    pdcattr->ptlViewportOrg.y = Y;
    pdcattr->flXform |= PAGE_XLATE_CHANGED | WORLD_XFORM_CHANGED | DEVICE_TO_WORLD_INVALID;

    DC_UnlockDc(dc);

    return TRUE;
}

NtGdiSetWindowOrgEx()

BOOL APIENTRY NtGdiSetWindowOrgEx	(	HDC	hDC,
		int	X,
		int	Y,
		LPPOINT	Point
	)

Definition at line 997 of file coord.c.

{
    PDC dc;
    PDC_ATTR pdcattr;

    dc = DC_LockDc(hDC);
    if (!dc)
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return FALSE;
    }
    pdcattr = dc->pdcattr;

    if (Point)
    {
        NTSTATUS Status = STATUS_SUCCESS;

        _SEH2_TRY
        {
            ProbeForWrite(Point, sizeof(POINT), 1);
            Point->x = pdcattr->ptlWindowOrg.x;
            Point->y = pdcattr->ptlWindowOrg.y;
        }
        _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
        {
            Status = _SEH2_GetExceptionCode();
        }
        _SEH2_END;

        if (!NT_SUCCESS(Status))
        {
            SetLastNtError(Status);
            DC_UnlockDc(dc);
            return FALSE;
        }
    }

    pdcattr->ptlWindowOrg.x = X;
    pdcattr->ptlWindowOrg.y = Y;
    pdcattr->flXform |= PAGE_XLATE_CHANGED | WORLD_XFORM_CHANGED | DEVICE_TO_WORLD_INVALID;

    DC_UnlockDc(dc);

    return TRUE;
}